eh, surname Wong, name Mun Keong - don't Mister mister lar, i tend to look around expecting to see my dear old daddy when i hear ppl calling Mr. Wong

MK or Mun Keong or wongmunkeong (handle) is good.
1. Airconds and inverter stuffI bought mine when i moved house.
If yours are new, perhaps it would not make sense to dump them.
What can be done now?
er.. temperature control via sunshade (ie. "onnings" and sun-reflective tints) + insulation (ceiling and/or roof just beneath them tiles). Then perhaps 20 to 23 celcius will be cold enough for your parents/U.
FYI - i'm a heat hater yet with the aircond at about 24 celcius (after room cooled down), it's a bit chilly that i've to use a comforter to cover while zzz hehe. That's in my place lar with ceiling insulation (rock wool) + sunshaded windows + reflective tinted windows.
Long term = lower cost as rock wool, "onnings" and reflective tints dont use electricity or move, thus very low or 0 maintenance/repair cost for a long while (mine's at least 5 years+ now)
As for the "expensive" gas, i think this is a common "suburban myth".
An aircond is engineered and designed NOT to leak gas. Gas or refrigerant is not "used up" like petrol in a car leh.
Thus, there should not be any need for "gas refills" UNLESS there are leaks - either during installation or accidents/wear/tear.
2. SavingsIt's always XX months' AVERAGE EXPENSES
eg. if U spend say $96K a year, your average expenses would be $8K per month.
Thus to be buffered from Murphy and his laws, should have at least $24K around in FD, Flexi mortgage (prepayments) and perhaps some in bond funds if have more than 3 months' average expenses built up.
Why not Salary of xx months? Murphy doesn't care how much U earn, it's how much outgoing U need to buffer
3. Futurea. Home
Rent first or live with parents. I'm unsure what's with the obsession of "moving out" with the new generation, especially when we still want to or have to care for our elderly parents. Just a PoV yar. Just to share - i bought my first home at 31, FORCED to buy coz my Sis booked it and wanted to "sell" me her portion of our parents house, which was HUGE (those days lar). Thus, i bought her booked house and sold her my portion of parents' house heheh.
b. Marriage
If one can't afford to marry Woman A, perhaps Woman A is "lebih" (ie. high maintenance and/or asking for too much) OR one is not ready yet to take up the responsibility of caring for another.
Personally, i think that as a responsible man, one should afford to pay for one's marriage, not rely on parents
AND if the woman or woman's family want this/that extravaganza (compared to both your earning/savings capacity) Vs the actual RM10 or RM20 to get married... <claps hand> NEXT CANDIDATE!
A good partnership (yup marriage is a partnership) should enrich BOTH parties, share goals/visions etc. may not be same methods but similar values make it much easier.
c. Babies...
er.. cost wise, operational cost per month is about $1K until primary school then it drops a bit UNLESS U intend to send for private / international school.. eeek!
d. Bottom line "Future"
It's up to U to control. Why are U in a hurry to marry? "Accident" ke?

There's no such thing as "age to marry" unless U are a woman and WANT to have biological kids - and even then, financially successful women don't even need to marry to have biological kids
Dont jump in when not ready lar. Build up your ammo, assets, knowledge, etc.
If your woman knows what U are doing, if she doesn't love U even more and/or works with U to build a future... <claps hand> NEXT CANDIDATE!
Rushing in unprepared or semi is crazy at best and suicidal at worst.
At least U worry only now, which is good - Worry, plan to solve, execute
IF U are IN IT, not only worry leh - can bleed very badly too
------------------
InvestmentsAfter your 3 mths to 6 mths expenses buffered?
I'd suggest U keep accumulating ammo in your FD, cash and bond funds
WHILE
learning about Asset Allocation (thus all the different investment assets/vehicles like stocks, bonds, properties, REITs (a type of stock) and their related items like equity funds & bond funds
THEN
plan out an asset allocation
+ what to invest in to make up your each asset class (PBBank, DLady, BSDREIT, TWRREIT, STAREIT, Equity Funds, Bond Funds)
& how to invest (value, trend, value cost averaging, dollar cost averaging, a combination, et.c)
& how to finance them (savings planning + EPF planning for A/C1 and A/C2 to take out + leveraging if wanted though becareful)
er.. in reality (mine lar, dunno about yours and others), there's no such thing as a "safe" investment
Even FD, if U think of it as investment, isn't "100% safe" - only up to $250K (pls correct me if i'm outdated) is insured per person per bank.
In addition, FD give how much %pa VS real inflation rate %pa?
eg. Chicken rice / char keuy tiao in 2010 size how big & cost how much VS now?
Thus, IMHO, Asset Allocation as a basic overarching control structure is best - balancing liquidity, fluctuations, capital growth & dividends.
Simple example that i am personally using:
1/3 in Fixed income instruments which gets % like FD/Flexi Mortgage, EPF, Bond funds
1/3 in Biz equities like "normal" stocks, "normal" equity funds, own small biz
1/3 in Real Estate related equities like shop lots, houses/apartments, offices, plantations, REITs in similar sub-asset classes
Note:
a. All these % (the 1/3) are excluding my emergency buffer.
b. I don't strictly keep my asset classes to 33.33% - i let it drift/run up to a difference of 25% or so before rebalancing / correcting the run/drift.
eg. min 24%+/- max 41%+/-
c. Thus, even though i stock / REITs pick and use programmatic investing via value averaging + DCA, the above Asset Allocation helps corrects my course structurally.
ie. i'm also a worker and a crazy saver (for now until i hit a point when my investment returns pa are 2 time more than my net salary+bonus savings & investing pa), thus at times, especially my $ in EPF & Flexi Mortgage is waaay too much as a % vs other asset classes, i'm triggered to "force buy" some equities.
Just some thoughts, no right / wrong yar

Ok MK hehe ...
1. Airconds.
- Ok guess i'll skip the new aircond stuff.
2. Savings
- Ok so it's not about income ... it's about expenses .. got it
3. Future
a. Home
OH TRUST ME. You have no idea how much i'd LOVE to stay with my parents lol. The place i'm in now is pretty big and convinient right in the middle of PJ lol. But like you said the "new generation", damn ... I'm afraid if i tell out that I plan to stay with my parents, no girls will even DATE ME lol ... if you got any amoi who don't mind staying with in laws around age 27 can intro me ? lol ...
b. Marriage
I totally get what you mean but, I don't know la ... KL these days, can we still get those type of mentality ? Sometimes I even think of going to places like Ipoh or you know .. more "Traditional" place to find gf ... really affraid of KL life ...
c. Babies ..
Wow this is new info to me ... thanks! So this is based on your personal experience? From born till primary is about 1k per month and after that will DROP ? Ok this is surprising hehe .. I thought it will keep adding and adding. Well for me primary and high school normal is ok. But I'd like to get my kids to a good college and if possible send them to overseas. I myself graduate from overseas and I'm very thankful and think that it helps alot as a teenager. But must make sure my kids is really go there study and not go overseas to screw around la haha.
d. Future ..
Just curious and plan early la .. hahaha choi choi choi ... i dun even have a gf leh ... 27 still virgin leh how =.= u say scared onot lolz ... yea no right or wrong about "age to marry" but the so called "guideline" is around 30 ma ..
Right .. guess i'm juz stresing myself too much coz I mingle around with uncle everytime in the office lol .. you reckon for me .. as this age .. NO SAVINGS is fine ? =.= Or rather .. starting now it's not too late ? I mean till the end i'm actually still very regret that I've wasted 3 years worth of so called "Savings".
Wow I guess the stuff below here is kinda too advanced for me yeah? Haha .. Ok I guess i'm going to stick with the 6 month stuff and learn about the Asset Allocation .. rest assured I'm going to save what you wrote for future reference
Again thanks alot for your help MK and also kparam77 .... I'm going for more readings and be back if I have any more doubts hehe .. oh yea about kparam77's suggestion .. anyone has idea what he meant by "subcribe to the edge personal money" ?